/*
 * Facebox (for jQuery)
 * version: 1.2 (05/05/2008)
 * @requires jQuery v1.2 or later
 *
 * Examples at http://famspam.com/facebox/
 *
 * Licensed under the MIT:
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
 *
 * Usage:
 *
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=facebox]').facebox()
 *  })
 *
 *  <a href="#terms" rel="facebox">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="facebox">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="facebox">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 *
 *    jQuery.facebox('some html')
 *    jQuery.facebox('some html', 'my-groovy-style')
 *
 *  The above will open a facebox with "some html" as the content.
 *
 *    jQuery.facebox(function($) {
 *      $.get('blah.html', function(data) { $.facebox(data) })
 *    })
 *
 *  The above will show a loading screen before the passed function is called,
 *  allowing for a better ajaxy experience.
 *
 *  The facebox function can also display an ajax page, an image, or the contents of a div:
 *
 *    jQuery.facebox({ ajax: 'remote.html' })
 *    jQuery.facebox({ ajax: 'remote.html' }, 'my-groovy-style')
 *    jQuery.facebox({ image: 'stairs.jpg' })
 *    jQuery.facebox({ image: 'stairs.jpg' }, 'my-groovy-style')
 *    jQuery.facebox({ div: '#box' })
 *    jQuery.facebox({ div: '#box' }, 'my-groovy-style')
 *
 *  Want to close the facebox?  Trigger the 'close.facebox' document event:
 *
 *    jQuery(document).trigger('close.facebox')
 *
 *  Facebox also has a bunch of other hooks:
 *
 *    loading.facebox
 *    beforeReveal.facebox
 *    reveal.facebox (aliased as 'afterReveal.facebox')
 *    init.facebox
 *    afterClose.facebox
 *
 *  Simply bind a function to any of these hooks:
 *
 *   $(document).bind('reveal.facebox', function() { ...stuff to do after the facebox and contents are revealed... })
 *
 */
( function($) {
	$.facebox = function(data, klass) {
		$.facebox.loading()
		$.facebox.reveal(data, klass);
		/*
		 * if (data.ajax) fillFaceboxFromAjax(data.ajax, klass) else if
		 * (data.image) fillFaceboxFromImage(data.image, klass) else if
		 * (data.div) fillFaceboxFromHref(data.div, klass) else if
		 * ($.isFunction(data)) data.call($) else $.facebox.reveal(data, klass)
		 */
	}

	/*
	 * Public, $.facebox methods
	 */

	$
			.extend(
					$.facebox,
					{
						settings : {
							opacity :0.2,
							overlay :true,
							loadingImage :'/static/images/loading.gif',
							closeImage :'/static/images/closelabel.png',
							imageTypes : [ 'png', 'jpg', 'jpeg', 'gif' ],
							faceboxHtml :'\
    <div id="facebox" style="display:none;"> \
      <div class="popup"> \
        <div class="content"> \
        </div> \
        <a href="#" class="close"><img src="/static/images/closelabel.png" title="close" class="close_image" /></a> \
      </div> \
    </div>'
						},

						loading : function() {
							init()
							if ($('#facebox .loading').length == 1)
								return true
							showOverlay()

							$('#facebox .content').empty()
							$('#facebox .body')
									.children()
									.hide()
									.end()
									.append(
											'<div class="loading"><img src="' + $.facebox.settings.loadingImage + '"/></div>')

							$('#facebox').css(
									{
										top :getPageScroll()[1]
												+ (getPageHeight() / 10) + 50,
										left :$(window).width() / 2 - 205
									}).show()

							$(document).bind('keydown.facebox', function(e) {
								if (e.keyCode == 27)
									$.facebox.close()
								return true
							})
							$(document).trigger('loading.facebox')
						},

						reveal : function(data, klass) {
							$(document).trigger('beforeReveal.facebox')
							if (klass)
								$('#facebox .content').addClass(klass)
							$('#facebox .content').append(data)
							$('#facebox .loading').remove()
							$('#facebox .body').children().fadeIn('normal')
							$('#facebox')
									.css(
											'left',
											$(window).width()
													/ 2
													- ($('#facebox .popup')
															.width() / 2))
							$(document).trigger('reveal.facebox').trigger(
									'afterReveal.facebox')
						},

						close : function() {
							$(document).trigger('close.facebox')
							return false
						}
					})

	/*
	 * Public, $.fn methods
	 */

	$.fn.facebox = function(settings) {
		if ($(this).length == 0)
			return

			init(settings)

		function clickHandler() {
			$.facebox.loading(true)

			// support for rel="facebox.inline_popup" syntax, to add a class
			// also supports deprecated "facebox[.inline_popup]" syntax
			var klass = this.rel.match(/facebox\[?\.(\w+)\]?/)
			if (klass)
				klass = klass[1]

			fillFaceboxFromHref(this.href, klass)
			return false
		}

		return this.bind('click.facebox', clickHandler)
	}

	/*
	 * Private methods
	 */

	// called one time to setup facebox on this page
	function init(settings) {
		if ($.facebox.settings.inited)
			return true
		else
			$.facebox.settings.inited = true

		$(document).trigger('init.facebox')
		makeCompatible()

		var imageTypes = $.facebox.settings.imageTypes.join('|')
		$.facebox.settings.imageTypesRegexp = new RegExp(
				'\.(' + imageTypes + ')$', 'i')

		if (settings)
			$.extend($.facebox.settings, settings)
		$('body').append($.facebox.settings.faceboxHtml)

		var preload = [ new Image(), new Image() ]
		preload[0].src = $.facebox.settings.closeImage
		preload[1].src = $.facebox.settings.loadingImage

		$('#facebox').find('.b:first, .bl').each(
				function() {
					preload.push(new Image())
					preload.slice(-1).src = $(this).css('background-image')
							.replace(/url\((.+)\)/, '$1')
				})

		$('#facebox .close').click($.facebox.close)
		$('#facebox .close_image').attr('src', $.facebox.settings.closeImage)
	}

	// getPageScroll() by quirksmode.com
	function getPageScroll() {
		var xScroll, yScroll;
		if (self.pageYOffset) {
			yScroll = self.pageYOffset;
			xScroll = self.pageXOffset;
		} else if (document.documentElement
				&& document.documentElement.scrollTop) { // Explorer 6 Strict
			yScroll = document.documentElement.scrollTop;
			xScroll = document.documentElement.scrollLeft;
		} else if (document.body) {// all other Explorers
			yScroll = document.body.scrollTop;
			xScroll = document.body.scrollLeft;
		}
		return new Array(xScroll, yScroll)
	}

	// Adapted from getPageSize() by quirksmode.com
	function getPageHeight() {
		var windowHeight
		if (self.innerHeight) { // all except Explorer
			windowHeight = self.innerHeight;
		} else if (document.documentElement
				&& document.documentElement.clientHeight) { // Explorer 6 Strict
															// Mode
			windowHeight = document.documentElement.clientHeight;
		} else if (document.body) { // other Explorers
			windowHeight = document.body.clientHeight;
		}
		return windowHeight
	}

	// Backwards compatibility
	function makeCompatible() {
		var $s = $.facebox.settings

		$s.loadingImage = $s.loading_image || $s.loadingImage
		$s.closeImage = $s.close_image || $s.closeImage
		$s.imageTypes = $s.image_types || $s.imageTypes
		$s.faceboxHtml = $s.facebox_html || $s.faceboxHtml
	}

	// Figures out what you want to display and displays it
	// formats are:
	// div: #id
	// image: blah.extension
	// ajax: anything else
	function fillFaceboxFromHref(href, klass) {
		// div
		if (href.match(/#/)) {
			var url = window.location.href.split('#')[0]
			var target = href.replace(url, '')
			if (target == '#')
				return $.facebox.reveal($(target).html(), klass)

				// image
		} else if (href.match($.facebox.settings.imageTypesRegexp)) {
			fillFaceboxFromImage(href, klass)
			// ajax
		} else {
			fillFaceboxFromAjax(href, klass)
		}
	}

	function fillFaceboxFromImage(href, klass) {
		var image = new Image()
		image.onload = function() {
			$.facebox.reveal(
					'<div class="image"><img src="' + image.src + '" /></div>',
					klass)
		}
		image.src = href
	}

	function fillFaceboxFromAjax(href, klass) {
		$.get(href, function(data) {
			$.facebox.reveal(data, klass)
		})
	}

	function skipOverlay() {
		return $.facebox.settings.overlay == false
				|| $.facebox.settings.opacity === null
	}

	function showOverlay() {
		if (skipOverlay())
			return

		if ($('#facebox_overlay').length == 0)
			$("body").append(
					'<div id="facebox_overlay" class="facebox_hide"></div>')

		if (document.body.clientHeight < screen.height)
			var bg_h = screen.height;
		else
			var bg_h = document.body.clientHeight;

		$('#facebox_overlay').hide().addClass("facebox_overlayBG").css(
				'opacity', $.facebox.settings.opacity).click( function() {
			$(document).trigger('close.facebox')
		}).fadeIn(200)
		
		var iWidth = document.documentElement.clientWidth;
		$('#facebox_overlay').css("width", iWidth + "px");
		$('#facebox_overlay').css("height", bg_h + "px");
		return false
	}

	function hideOverlay() {
		if (skipOverlay())
			return

			$('#facebox_overlay').fadeOut(200, function() {
				$("#facebox_overlay").removeClass("facebox_overlayBG")
				$("#facebox_overlay").addClass("facebox_hide")
				$("#facebox_overlay").remove()
			})

		return false
	}

	/*
	 * Bindings
	 */

	$(document).bind('close.facebox', function() {
		$(document).unbind('keydown.facebox')
		$('#facebox').fadeOut( function() {
			$('#facebox .content').removeClass().addClass('content')
			$('#facebox .loading').remove()
			$(document).trigger('afterClose.facebox')
		})
		hideOverlay()
	})

})(jQuery);